Soil Preparation Justice Electric Power Transmission Ventilation Regulation and Administration of Communications Plumbing Justice Other Justice Regulation and Administration of Communications International Plumbing Other Justice Ventilation

Plants Control, safety, signalling and light equipment Control, safety or signalling equipment for inland waterways Heating works Control, safety or signalling equipment for parking facilities Command, control, communication systems Electricity, heating, solar and nuclear energy Control, safety or signalling equipment for port installations Command, control, communication and computer systems Pressure-reducing, control, check or safety valves Public utilities Other services Control, safety or signalling equipment for roads Heating, ventilation and air-conditioning installation work Control, safety or signalling equipment for airports

Utilities Pest control Disinfection Substation Case making services

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Roads and Highways-Bridge Printing and Publishing Services Construction Energy-Power and Electrical Computer Hardwares and Consumables